Process for the manufacture of linoleum cement



Patented Dec. 14, 1926.-

UNITED STATES PATENT PAUL SLANSKY, or 'LOIBOSITZ, CZEGHOSLOVAKIA, AssxGNon or ONE-HALF TO THE FIRM nnorsonn LmoLEUM-WERKE HANSA; or nELMnNHoRs'r, GERMANY..

rnoonss FOR THE MANUFACTURE or L INOLEUM CEMENT.

in Drawing. Application filcd 111116.27, 1925, Serial No. 40,073, and in Czechoslovakia February 6,1924. 4

This invention refers to the manufacture of linoleum cements which, as is well known, can be produced by homogeneously melting solid oxidized oils with resins in an open 5 melting vessel at temperatures which do not exceed 150160 C.

According to a prior process however it is only ossible to melt together those oils, which are not too'greatly oxidized, and have W not been stored for long. If the oil has been too much oxidized, it becomes increasingly crumbly in the cement vessel, heats up ofits own accord and finally ignites.

The reason for this phenomenon is that the strongly oxidized oils have higher melting points than those which are moderately oxidized. However if these strongly oxidized" oils are heated to higher temperatures, a further oxidation takes place in such a vigorous manner, that the oxidized oil kindles of its own accord. It is therefore owing to this vigorous further oxidation that for the manufacture of linoleum cement is carried out in the absence of oxygen.-

he exclusion of oxygen is brought about in a pgeliminary step in any suitable man- 'ner, as for instance, by'its displacement with inert gases or by removing the oxygen by.

' sence of all gases capable of yielding oxygen, 80

vacuum.

The addition of resins to oxidized drying oils is known in the manufacture of linoleum cements and in accordance with the present invention, such resins as 'colophony, kauricopal and so on may be added and a small; percentage of water, not exceeding 10% by the process of melting solid oxidized oils weight of the total oxidized oils and resins used, may be advantageously added. The 4 water-tends to decrease the melting point of the oxidized oi] and the reaction is thus peritted to operate at a relatively lower temperature if desired. The absence of oxygen makes it possible to use much higher temperatures than would otherwise be possible.

Emample I.

80 kgs. of linoxyn are mixed with 15 kgs.

.of colophonyand 5 kgs. of kaurico pal resin,

the New Zealand copal which is diflicult to melt, and the mixture is heated in an autoclave at160 C. after all the oxygen has been removed. The pressure in the autoclave"- 00 which isv generated by the gases evolved from the oils, resins and water rises to about 3 .atmospheres at a temperature of160 C. The melting of themass in the-autoclave can be accelerated if the same is'worked up 65 in a moist state, that is to say, if it contains a relatively small amount of waternot exceeding ten percent. I e 4 Example [1.

The p r ocess is the same as in Example I, but in place of the linoxyn 50 kg. oxidized perilla oil are used. 1

What I claim is A process for the manufacture of a linoleum cement consisting of melting under pressure a solid oxidized vegetable drying oil together with resins in the presence of a small percentage of water and in the .ab-

the pressure being developed from the gases 1 volatilized from the oil resins and water during the melting thereof.

In testimonywhereof I aflix my signature.

PAUL SLANSKY. Y 

